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Three‐dimensional Bragg coherent diffraction imaging of an extended ZnO crystal
Author(s) -
Huang Xiaojing,
Harder Ross,
Leake Steven,
Clark Jesse,
Robinson Ian
Publication year - 2012
Publication title -
journal of applied crystallography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.429
H-Index - 162
ISSN - 1600-5767
DOI - 10.1107/s0021889812018900
Subject(s) - coherent diffraction imaging , optics , ptychography , diffraction , diffraction topography , materials science , coherence (philosophical gambling strategy) , crystal (programming language) , wavefront , bragg's law , physics , phase retrieval , fourier transform , computer science , programming language , quantum mechanics
A complex three‐dimensional quantitative image of an extended zinc oxide (ZnO) crystal has been obtained using Bragg coherent diffraction imaging integrated with ptychography. By scanning a 2.5 µm‐long arm of a ZnO tetrapod across a 1.3 µm X‐ray beam with fine step sizes while measuring a three‐dimensional diffraction pattern at each scan spot, the three‐dimensional electron density and projected displacement field of the entire crystal were recovered. The simultaneously reconstructed complex wavefront of the illumination combined with its coherence properties determined by a partial coherence analysis implemented in the reconstruction process provide a comprehensive characterization of the incident X‐ray beam.